What is Markdown Viewer?

Markdown Viewer focuses on reading Markdown files in Firefox without manually converting them to HTML. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is Markdown Viewer for?

Markdown Viewer is a consumer product built for firefox users who read local or web-hosted Markdown files.

Is Markdown Viewer free?

Yes — Markdown Viewer is free to use.

What platforms does Markdown Viewer run on?

Markdown Viewer runs on the web and embeddable surfaces.

Is Markdown Viewer still active?

Unverified. Markdown Viewer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Markdown Viewer?

Similar projects tracked by PulseGate include Markdown file reader, Markdown Viewer Plus, and Markdown-Viewer.

Who develops Markdown Viewer?

Markdown Viewer is developed by Henry van Megen.

How long has Markdown Viewer been around?

Markdown Viewer first shipped in 2026.

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Markdown Viewer

Name: Markdown Viewer
Author: Henry van Megen

mozilla.orgBrowser DevTools & extensions

Markdown Viewer is a Firefox extension that automatically converts opened .md files into readable HTML documents. It supports tables of contents, author cards, optional avatars, task-list checkboxes, and local per-file persistence.

FreeWebEmbeddable

Visit mozilla.org

1alternative

7features

2026since

Overview

7 features

In the Browser DevTools & extensions space, Markdown Viewer takes a focused approach. It focuses on reading Markdown files in Firefox without manually converting them to HTML. Markdown Viewer is a consumer product aimed at firefox users who read local or web-hosted Markdown files. It is available for free. Markdown Viewer is available on the web and embeddable surfaces.

Behind Markdown Viewer is Henry van Megen, and it first shipped in 2026. Key capabilities include markdown rendering, table of contents, and author cards. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Markdown rendering
Table of contents
Author cards
Avatar lookup
Task list checkboxes
Local persistence
Local processing

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed14 Sep · 14:36 UTC
Markdown Viewer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Markdown Viewer

What is Markdown Viewer?: Markdown Viewer focuses on reading Markdown files in Firefox without manually converting them to HTML. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Markdown Viewer for?: Markdown Viewer is a consumer product built for firefox users who read local or web-hosted Markdown files.
Is Markdown Viewer free?: Yes — Markdown Viewer is free to use.
What platforms does Markdown Viewer run on?: Markdown Viewer runs on the web and embeddable surfaces.
Is Markdown Viewer still active?: Unverified. Markdown Viewer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Markdown Viewer?: Similar projects tracked by PulseGate include Markdown file reader, Markdown Viewer Plus, and Markdown-Viewer.Markdown file reader Markdown Viewer Plus Markdown-Viewer
Who develops Markdown Viewer?: Markdown Viewer is developed by Henry van Megen.
How long has Markdown Viewer been around?: Markdown Viewer first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 14 Sept 2026
Built for: Firefox users who read local or web-hosted Markdown files
Model: B2C
Solves: Reading Markdown files in Firefox without manually converting them to HTML.

Registered as

Firefox Add-ons: mdviewer

Developer

Henry van Megen

Index record

Indexed: 14 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 14 Sep 2026

Identity audit (13)

Slug: markdown-viewer-mozilla-org
Lifecycle state recorded: 14 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 14 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 14 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/mdviewer

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